.app-header{width:100%;background-color:var(--grid-background-color);padding:1rem 2rem;box-shadow:0 2px 4px #0000001a;position:sticky;top:0;z-index:1000;box-sizing:border-box}.header-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;max-width:1200px;margin:0 auto}.header-title{font-size:2.5rem;font-weight:300;letter-spacing:1px;text-transform:uppercase;margin:0;color:var(--highlight-cell-color);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media (max-width: 768px){.app-header{padding:1rem}.header-content{justify-content:center}.header-title{font-size:1.8rem;text-align:center;width:100%;margin-bottom:.5rem}.hide-on-mobile-game-page{display:none}}:root{--background-color: #2c3e50;--grid-background-color: #34495e;--grid-line-color: #4a6572;--text-color: #ecf0f1;--highlight-color: #3c566b;--highlight-cell-color: #1abc9c;--correct-color: #2ecc71;--incorrect-color: #e74c3c;--font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif}body{margin:0;font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background-color);color:var(--text-color);overflow-x:hidden}.App{display:flex;flex-direction:column;min-height:100vh}main{flex-grow:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:1rem;box-sizing:border-box;width:100%}.game-container{display:flex;flex-direction:column;align-items:center;gap:1.5rem}h1{font-size:3rem;font-weight:300;letter-spacing:2px;text-transform:uppercase;margin-bottom:1rem}.grid{display:grid;gap:3px;background-color:var(--grid-line-color);border:3px solid var(--grid-line-color);border-radius:8px;padding:10px;box-shadow:0 10px 20px #0003;transition:all .3s ease-in-out;position:relative;z-index:1}.grid-cell{position:relative;background-color:var(--grid-background-color);display:flex;justify-content:center;align-items:center;font-size:1rem;font-weight:700;border-radius:4px;aspect-ratio:1 / 1;transition:all .3s ease-in-out;z-index:1}.grid-cell.header{font-weight:400;font-size:1.2rem;background-color:transparent}.grid-cell.active-question{transform:scale(2.5);background-color:var(--highlight-cell-color);border:2px solid rgba(255,255,255,.2);box-shadow:0 8px 25px #0006;z-index:999!important;position:relative;transform-origin:center center;transition:all .3s ease-in-out;will-change:transform;margin:-33px}.grid-cell.error-state{background-color:var(--incorrect-color)!important;animation:shake .5s ease-in-out}@keyframes shake{0%,to{transform:scale(2.5) translate(0)}25%{transform:scale(2.5) translate(-5px)}75%{transform:scale(2.5) translate(5px)}}.error-feedback{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;width:100%}.error-icon{font-size:1.2rem;margin-bottom:2px}.error-text{font-size:.7rem;font-weight:700;color:#fff}.cell-input{position:absolute;top:-10px;left:0;width:100%;height:100%;padding-top:15px;background:transparent;border:none;color:#fff;text-align:center;font-size:1rem;font-weight:700}.cell-input:focus{outline:none}.cell-input::-webkit-outer-spin-button,.cell-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.cell-input[type=number]{-webkit-appearance:textfield;appearance:textfield;-moz-appearance:textfield}.question-text{position:absolute;top:5px;left:5px;right:5px;font-size:.6rem;font-weight:400;opacity:.9;color:#2c3e50}.game-stats{display:flex;justify-content:space-between;width:100%;max-width:800px;font-size:1.2rem;padding:0 2rem}.submit-btn{padding:10px 20px;font-size:1.5rem;border:none;border-radius:4px;background-color:var(--highlight-cell-color);color:#fff;cursor:pointer;transition:background-color .2s}.submit-btn:hover{background-color:#16a085}.feedback.correct{color:var(--correct-color);font-size:1.5rem;font-weight:700}.settings-form{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem;background-color:var(--grid-background-color);padding:2rem;border-radius:8px}.setting-item{display:flex;align-items:center;gap:1rem}.setting-item label{font-size:1.2rem}.setting-item input[type=range]{width:100%;max-width:200px}.settings-buttons{display:flex;gap:1rem;flex-wrap:wrap}.highscore-btn{padding:10px 20px;font-size:1.2rem;border:none;border-radius:4px;background-color:#f39c12;color:#fff;cursor:pointer;transition:background-color .2s}.highscore-btn:hover{background-color:#e67e22}.clear-btn{padding:8px 16px;font-size:1rem;border:none;border-radius:4px;background-color:var(--incorrect-color);color:#fff;cursor:pointer;transition:background-color .2s}.clear-btn:hover{background-color:#c0392b}.highscore-container{max-width:600px;margin:0 auto;padding:2rem;background-color:var(--grid-background-color);border-radius:8px;box-shadow:0 4px 12px #0000004d}.highscore-container h2{text-align:center;color:var(--highlight-cell-color);margin-bottom:.5rem;font-size:2.5rem}.highscore-container p{text-align:center;color:#bdc3c7;margin-bottom:1rem;font-size:1.1rem}.no-scores{text-align:center;color:#95a5a6;padding:2rem;font-style:italic}.scores-list{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}.score-item{display:flex;align-items:center;background-color:var(--background-color);padding:1.5rem;border-radius:8px;border-left:4px solid var(--highlight-cell-color);transition:transform .2s}.score-item:hover{transform:translate(5px)}.score-item:first-child{border-left-color:#f1c40f;background:linear-gradient(135deg,var(--background-color),#3c3c3c)}.score-rank{font-size:1.5rem;font-weight:700;color:var(--highlight-cell-color);margin-right:1.5rem;min-width:40px}.score-item:first-child .score-rank{color:#f1c40f}.score-details{flex:1}.score-main{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.score-time{font-size:1.4rem;font-weight:700;color:var(--highlight-cell-color)}.score-grid{font-size:1rem;color:#95a5a6;background-color:#95a5a633;padding:.2rem .5rem;border-radius:4px}.score-meta{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;color:#95a5a6;flex-wrap:wrap;gap:.5rem}.score-errors{color:var(--incorrect-color)}.score-date{color:#7f8c8d}.highscore-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.game-layout{display:flex;justify-content:center;align-items:flex-start;width:100%;position:relative;min-height:100vh}.game-main{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.language-selector{position:absolute;top:1rem;right:1rem}.language-select{background-color:var(--grid-background-color);color:var(--text-color);border:1px solid rgba(189,195,199,.2);border-radius:6px;padding:.5rem 1rem;font-size:.9rem;cursor:pointer;transition:all .2s ease}.language-select:hover{border-color:var(--primary-color);box-shadow:0 2px 8px #0003}.language-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #1abc9c33}@media (max-width: 768px){main{padding:1rem}.grid-cell.active-question{transform:scale(1.8)!important;margin:-2.5vw}.grid-cell.error-state{animation:shake-mobile .5s ease-in-out}@keyframes shake-mobile{0%,to{transform:scale(1.8) translate(0)}25%{transform:scale(1.8) translate(-3px)}75%{transform:scale(1.8) translate(3px)}}.game-stats{flex-direction:column;gap:.5rem;text-align:center}.highscore-container{margin:1rem;padding:1rem}.score-item{flex-direction:column;text-align:center;gap:.5rem}.score-rank{margin-right:0;margin-bottom:.5rem}.score-main{flex-direction:column;gap:.5rem;margin-bottom:1rem}.settings-buttons{justify-content:center}}